Portable tire-inflater.



PATENTED JAN. 28, 1908.

J. W. RADU.

PORTABLE TIRE INFLATER.

APPLICATION FILED JULY 13.1907.

2 SHEETSSHEET 1.

5] W00 wtoz No. 877,861. PATENTED JAN. 28, 1908.

J. W. RADU. PORTABLE TIRE INFLATER.

APPLICATION FILED JULY 13, 1907.

2 SHEETS-SHEET 2.

1\ z W )x 1i i 5 b L 1 A R Q :2 I "(5"(41 JIIIIIIIIIIIIIII' i \s U 1 ix I I I zzzm l a N 5? UNITED STATES PATENT orrrcn;

JOllN \\'.-1t.\ 1-) L OF ROCHESTER, NEW YORK, ASSIGNOR OF ONE-HALF TO ROCHESTER,

NEW YORK.

PORTABLE TIRE-INFLATER.

Specification of Letters Patent.

Patented Jan. 28, 1908.

Application filed July 13. 1907. Serial No. 383.693.

'1?) a who) it may concern:

Be it known that 1, Join: WILLIAM RADU,

a citizen of the [jnited States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Portable Tireinflaters, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in portable tire-inflaters for automobiles and the like: and an object of my invention is to provide a tire-inllater which will prove simple in coiistruction, comparatively cheap in manufacture and most el'licient and handy in actual operation and use. 1n the drawings illustrating of my invention and the best mode now known to me of applying that principle, Figure 1 is a side elcvation, partly in sectional l l 1 the principle view, of my new tireinllater; Fig. 2 is a section on the line AA of Fig. 1; Fig. 3 is a section on the line BB of Fig. l; and Figs. 4 and 5 relate to a modification hereinafter described.

The casing a of. the electric motor 6 is pro-- vided with the handle or grip c and bindingposts (1 connected through the wires 6 and plugf with any suitable source of current, as 1 the lamp-socket of the automobile. The binding-posts (Z are electrically connected with the terminals of the field coils g. The armature h of the motor 1) drives the pinion h which meshes with the spur gear 'i fast upon the shaft 7'. The latter carries fastl upon it a toothed wheel or gear is which is in mesh with the toothed wheel or gear m fast upon the shaft n. The shafts and n are I mounted in the pump casing 0 formed with the inlet-pipe p and the discharge pipe g I The latter is formed witha nipple 1- for the I attachment of a hose-pipe s which leads the air to the tire to be inflated. Upon the top of the discharge pipe (1 is mounted a valvecasing t which communicates with the pater air through the slot a and with the discharge pipe 9 through the opening '22. The latter is normally closed by the safety-valve or blowofi' valve 211 which is held upon-its seat by the coil spring at the tension of whichis adjusted coil spring at when the hand-wheel y is turned so as to lower the disk 2 and the pressure of the spring :10 is indicated by the index 3 which travels over the scale 4 (Big. 1), whereby the blow-01f point of the valve is imlicated, also.

Air is admitted to the pump through the inlet-pipe p in which is mounted a valve 5 which automatically prevents a return flow of air, when the pump is stopped.

The mode of operation. of the pump is fully described in my application Serial No. 383,694 filed concurrently herewith; there fore, no further description is deemed necessary here.

As is shown in-Figs. ,-1 and 5, the armature shaft 6 may be directly connected Withthe shaft 7 of the upper gear m by the coupling 8 consisting of the grooved disk 9 with which engages the rib 111 formed on the disk 11. To the casing 0 of the pump is bolted the housing 12 for the parts by which the armature is connected with the pump which it drives. The whole apparatus is mounted upon a common base plate 13; and it may be readily shifted from place to place by means of the grip c.

I claim:

1. In an apparatus of the character described, the combination of a base-plate; an electric motor mounted thereon an air compressor mounted on said base-plate; mechanism connecting said motor and aircompressor, whereby said motor drives said air-compressor; means for connecting said air-compressor with the tube to be inflated,- means for connecting electrically said motor and a suitable source of current," and means for carrying the apparatus by hand.

2. In an apparatus of the character described, the combination of a base-plate; an electric motor mounted thereon; an aircompressor mounted on said base-plate; mechanism connecting said motor and aircompressor, whereby said motor drives said PAUL G. WI LD, OF,

air-compressor; a housing for said mechani hand at said Rochester this 24 day of isni; means for connecting said air-com- June, 1907 ,1n the presence of the two underpressor With the tube to be inflated; means signed witnesses.

for connecting electrically said motor and a l J. W. RADU. 5 suitable source of current; and a grip by \Vitnesses:

which the apparatus may be carried by hand. 1 CLARA L. RADU,

In witness thereof I have hereunto set my i FREDERICK 7. C011; 

